Lubricating apparatus



March 1, 1932. ||I J, MURPHY 1,847,357

LUBRICATING APPARATUS Filed March 14. 1922 Eiga;

Patented Mar. 1, 1932 HOWARD J. MUILIKHY, oF REAIJING, MASSACHUSETTS, AssIGNoE, BY MEsNE AssIGN- MENTS, To ALEMITEICOEPOBATIQN, E cnIcAGo, ILLINoIs, A CORPORATION or DELAWARE V'LuisaICA'TING AIPAnAT'Us Appueatioa nica March i4, l1922. "serial No. 543,652.

This invention pertainsv to vvimprovements inlubricating apparatus. Itis among the objects of the invention to improve that form of lubricating apparatus-wherein a lubricant-receiving element is adapted tobe readily connected to and disconnected from a source of lubricant under pressure.

In the drawings, 4which show a preferred form of one embodiment lof my invention'z'- Figure 1 is a side elevation of a preferred device coupled form of lubricant-expelling to a lubricant-receiving element; Y

'F'gz 2 is a longitudinal central section through thedischarge end ofthe ylubricanteXpelling device illustratedfinfFig. -l, showing. the Ylubricant-receivingV element in elevation; i

Fig. 3 is a section on the same line as Fig. 2, being partly in elevation'to show the'relative position of various interior arts pursuant to coupling andv'alve openingfoperation;

Fig. 4 is a vie-w similar to Fig. 3, but showing the `relative positionof the parts-prior to the coupling operation; i t Fig. 5 includes an end and aside elevation of a preferred form of coupling sleeve shown as retractile; 'u f t M [F ig. 6 includes a side and an end elevation of a preferred formA of connecting sleeve;

Fig. 7 includes an end anda side2 elevation of a preferred form of'sealin'g part; 'l

Fig. 8 shows a valve packing washer; and

Fig. 9 includes a side andv an end elevation of a preferred form of valvevv plungerjf Referringto the drawings and.v tothe preferred form of my invention selected for illustratve'purposes, Il have shownfa lubricant-expelling device resembling more or less the usual lubricant gun, having a barrel 10,

a rear head 11 and a threaded stem 12 engaging threadson thehead 11 andy carrying the usual lubricant-expelling piston the barrel 10. At the-'discharge endfof'the lubricantexpelling device, I'have' shown'a icoupling and valve mechanism forllengagement withy a lubricant-receiving nipplev 14`hav`in'g lateral projections 15 and presenting at' one end thereof a lubricant-receiving aperturel closed by the usual vcheck valve 16. v'This'nipple is,`

ofcourse, asin the case of'my co-pending applications filed herewith, intended t0 be secured to a part to be lubricated, as by threads 17, sothat the nipple is held against rotation during the coupling and uncoupling operations. l The preferred form of couplingillustrated is carried by the frontfhead 18 of the barrel 10 and includes a retractile sleeve 19 presenting an end opening 20 adapted to receive the pro` jections 15 on the nipple14 and-presenting flanges-21 adaptedto underlie the projections 15 when the sleeve or nozzle 1.9 is turned relative tothe nipple. Cooperating with the retractile coupling sleeve 19, I have shown a sealing part 22 apertured to Ypermit passage of lubricant' therethrough to the lubricant-receiving openingin the nipple and carrying a more or less compressible sealing washer 23. In the preferred formtof my invention illustrated, the sealingpart22 is held against rotation. or turningr movement relative to the nipple 14`when the nipplev is carried in the nozzle'byy a connecting sleeve 24 having an aperture therethrough shaped to engage laterally the projections on the nipple 14 and to engage the square end 25 ofthe sealing part 22.*y YThe connecting sleeve 24 is held in its foremost position against the inside of the flange 21 by any suitable means typiedby the spring ring 26 (Fig. 2), and the connection between the connecting ringv 24 and the squared end, 25 of the sealing part 22 is such as to permit sliding movement of the connectingsleeve relative to the sealing-part. The connection between the coupling isleeve or nozzle 19 and its`carrying parts connected tov the head 18 is such that Eupon rotation ofits carrying parts, the nozzle or coupling sleeve 19 willbe retracted relativeto the head of the gun, thus rendering unnecessary the movement of the sealingl part 22.relative tothe head of the gunf'duringth'e coupling and uncoupling operations. Where, as in the referred 'form of my'invention illustrate a valve is used which'shuts off the opportunity for escape of lubricant from the lubricantexpel-ling device priork to uncou ling movement, any retractile movement o the sealing part 221during yuncoupling must'be against yca in such a way as to have to operate in either direction against pressure of the lubricant.

Relative movement between the *sleeve 19 and the sealing part 22 is eifectedby pin andslot' means typified by the screw 40 carried by the sealing part 22 and having its hea-dv fitting a slot 41 in the retractile sleeve 19,.v e Assuming the nipple 14 to be held against rotation by the part to be lubricated, the sealing part 22 will beV held against rotation by theconnecting sleeve 24 engaging the side faces of the projections 15 on the nippleand eng-agingthe squared end 25 of the sealingl part. Therefore, when the barrel 10 of the gun is turned, the coupling Sleeve 19-,will be turned tobring the projections on thenipple from the posi-- tion illustrated in Fig; 4to the position illustrated in Fig. 2,v in which these projections overhangthe flangel portions. 21, and at the same time' the pinr40, lcooperating lwith the slot 41, will retractdthe sleeve19 as thesc'rew 40 moves from the end of its slot at the top o f Fig. 3 to the end'` of said slot toward the bottom of'Fig. 3. fy l v The retractile coupling part 19A is of great advantage, whether associated with the type ofV valvevillustrated or not, but IY have provided therewith aparticularly e-ectiveand desirable forml ofvalve vmechanism of the- -deferred action type so that the valve opening operation does not begin until thecoupling operation isgcompleted and so `that the uncoupling operation does not'commence until the valve closing operation is completed, thus preventing leakage oflubricant arising from pressure in the grease expelling device during or pursuant to coupling andA uncoupling operations." l r A The preferred form ofvalve illustrated is operated by movement of the barrel 1S() to-` wardthe nipple 14 pursuant to4 coupling operationand by movement thereof away, from said nipple Ypreparatory,tolthe, -uncoupling operation. 1I have effected this 'valve-,operat-V ing movementby providing inclined means typified by the slot 59m the coupling sleeve 19. cooperating .with the pin provided by thescrew 51. Vfined relative to lthe headzl18 of the barrel YThis slot 5,0 ispreferably provided witli a relativelyabruptfportion 53` which opposeslmovement ofthe head relative to the coupling sleeve during the coupling operation,but which permits such movement pursuant to the Ycoupling operation. Thus, prior to coupling, thek pin 51 isin thev position illustrated inlfig. 4. vAt the .end of the vcoupling operation, the retraetil'e-,sleeve 19l will have been drawnback sufficiently so.

vided lby lal valve stemthreaded into the sealing part' 22 and* suitably apertured to permit passage of lubricant *therethrough whiler openl and to oppose passage of lubricant therethrough when closed. To this end,

I :have provided 'a'valve seat 61 carried by the head `18V of the gun, against which the head; 62` carried by theyave stem 60, may seat with .the lubricant passage 63 vbelow the valve sea-tand removed from the lubricant inthe gun when closed, while exposed thereto when open..

The operatlon of the preferred .form of apparatus ,illustrated lis asy follows. `Assumingthey nipple to be separated from the gun, and ,toV be carried by apart to be lubricated, .thefgun vmaybe grasped by the rear end thereofV or even by the' handle on the stem `12,r and the .nozzlev end of the gun slipped over the head of the lubricant-re- Ceiving nipple to. the position vlewed in Fig. 4.. The valve isnow closed and the pin 40 at the extreme top of the slot 41, while the valve-operating pin 51 is inthe abrupt portiongr53 -of the slot 50. The projections on the `nipple 19 fit the interior of the connecting sleeve 24, and the connecting sleeve 24 engages the squared end 25 of the sealing part 22 so that there can be no rotation either of the nippleheld by thepart to bev lubricated, or of the connectingV sleeve 24 or of the sealingjpart 22. If new the barrel of the gun be turned` tol theright, which may ordinarily be effected, if desired, by turning the handle attached to the screw-threaded stem 12, there willfbenorotation between the head1@ orpa-rts directly connected therewith and the coupling` sleeve or nozzle 19 to Open thevalve. becausefthe valve-operating pine-lds inthe steep. portion 53 of the slot 50. Therefore, thercoupling sleeve 19 will turn .with the barrel of the gun and the couplingpin 40.willfride down.the sleeve 41, 'retracting thel coupling sleeve 19. from the` position illustrated in Fig. 4to the positien illustrat'edlinFig., 2, this retraction being accomp anie ,lv by relative turning movement whichbringsthe projections 15 on the nipplewover theanges 2,1 of the` coupling sleeve., Whenf retraction has occurred sufficientlyto pressfthe headof the nipple firmly against the sealing washer 23, back-supportedbyV the sealing partL 22,A a tight. joint will be effectedandbecause ofthe retraction of the `coupling sleeve, jthe pin 51 will be out of thesteep portion 53; of the slot 50 and, On

yfurther turning of thebarrel,-the' pin- 51 may ride down the inclined slot 50 to the position illustrated in Fig. 3, thus drawing the entire barrel and its head `18 forwardly relative to the nipple 14 and relativeto the coupling sleeveI 19 in the scalino' part 22. The valve stem 60 carrying-the valve head 62 will remain' stationary with the sealing part 22 and, as the head 18 'moves forward, the seat 61 will move with itfaway from the head 62 on the valve stein, thus opening the ports G3 and permitting passage' of the lubricant from Athe interior-of thelubric'ant'expelling device `through the Av'alverand through the sealing part and discto the lubricantreceiving nipple. I preferably provide resilient means typified by the spring 70 (Fig. 2) 'normallytending to hold the sealing part 22, and therefore the valvestem-GO and parts carried thereby, inl forwardposition relative to the head 18. ln the form of my invention illustrated, this spring is interposeddirectly between the sealing part 22 and the head 1S, which, as illustrated, is integral with parts cooperating in the coupling,andvalve-operating movements. 'i n f While l have shown and described a preferred form of one embodiment of my in:- vention, it will be understood that changes involving omission, substitution,alteration and reversal of parts, and even changes in the mode of operation, maybe made without departing from the scope Vof my invention, which is best defined in the following claims.- 1

Claims: A I

1. Lubricatingapparatus comprising a lubricant-eXpelling gun having a member rigid therewith, a coupling carried by said member and presenting relatively*movable'parts movable toward each other for gripping be-` j tween them a portion of a lubricantreceiving nipple to provide a Itight joint, a valve', and means vfor causing relative movement between saidparts and said vgun to open' said valve. l Y

2. Lubricating apparatus comprising a lubricant-expelling gun, said fgun .having a rigid extension for supporting a coupling, said coupling presenting relatively movable parts movable toward each otherduring coupling` operation for gripping between them a portion of a lubricant-receiving nipple to provide a tight joint, a longitudinally mov- 3 able valve, and means for causing relative` movement between said parts and said gun to open said valve.

' 3. Lubricating apparatus comprising a lubricant-expelling gun having a rigid eXtension, a coupling carried by said extension andl presenting relatively movable parts movableY toward each other during coupling operation for positively gripping between them a portion of a'lubricant-receiving nipple to provide a tight joint, a longitudinally movable valve,.and.means `for causing relative movement between saidparts and said gun to open said valve, including a valve part carried by cent its discharge end, azvalve, said parts movable together relative to said device to open .sa-id: valve, and a'spring urging both of said. parts away from said device.- Y

' 6. Allubricant gun carryingat the discharge end of its vbarrel a valved coupling comprising an element longitudinally movable byrotation thereof relative to a cooperating non-rotatablepart and a valve axially operable by-rotationof means rotatable relative to a cooperating non-rotatable part and arvalveI axiallyoperable by rotation of means rotatable relative to said element and said Part. Y l

7 Lubricating apparatus comprising a lubricant gun presenting at its discharge end a coupling for connecting alsource of lubricant under pressure -to a lubricant-receiving part,

said coupling including asealing part and a retractile part for pressing the lubricant-receiving part against said sealing part to provide a tight joint therebetween, a valve part,

and oppositelyinclined cam means forcausing-,relative 4 movement of Asaid parts.

8.k Lubricating apparatus'comprising a lubricant gunV presenting at itsl discharge end a coupling for engaging a source of lubricant under pressure to a lubricant-receivingpart,

said coupling including a sealing part andv aninclined plane-operated retractil'e-part for pressing the lubricant-receiving part against said` sealing part toprovide a tight vjoint therebetween during coupling, operation, a valve, and an oppositely inclined plane-operated `part for opening said valve.

vim

l9. Lubricatingcapparatus comprising a lu- Y bricant gun presenting at its-dischargeend a coupling for engagingV asourceof lubricant under `pressure to a lubricantreceiving part, said coupling including a sealing part anda pin and inclined slot-operated retractile part for pressing the lubricant-receiving Y part against said sealing part to' provide a tight joint therebetween, a valve andv separate and distinct inclined plane-operated means for operating said valve after operation ofsaid sealingpart by said. first mentioned pin and slot means.k 1 1 10. Y Lubric ating-apparatus comprising a lu'-' bricant gun presenting at itsdischarge endV a couplingfor engaging a source of lubricant under `pressure to` a lubricant-receiving part, said-coupling including a sealing' ypart and a retractile part for pressing the lubricant-receiving part against said sealingpartlto providel a tight-joint therebetween, and interengaging means holding said sealing part against rotation relative to the lubricant-receiving partfduring the coupling operation.

11. Lubricating apparatus comprising a lubricant vgun presenting at itsl discharge end a Vcoupling for engaging a source of lubricant underpressure to a lubricant-receiving part, said coupling including a sealing part and a retractile part for pressing the lubricant-receiving partv against said sealing part to pro vide a tight Ajoint therebetween, and a sleeve presenting va non-'circular aperture therethrough for holding said sealing part against rotation relative to the lubricant-receiving part during the coupling operation.4

12. Lubricating apparatus comprising, a lubricant-expelling gun for connection to a lubricant-receiving nipple, said gun'carrying a coupling presenting a sleeve retractile to- 'Ward said gun duri-ng the coupling'operaton, a sealing part, and means preventing rotation of said,` sealing'part with respectto said nipple during the coupling operation.

13. Lubricating apparatus comprising, a lubricant-expelling gun for connection tov a lubricant-receiving nipple, said gun directly carrying a coupling presenting a sleeve retractile toward 'said gun during the coupling operation 'andv a valve openable subsequent to the coupling operation.

14j. Lubricating apparatus comprising, a lubricant-expelling gun Jfor connection to a lubricant-rece`iving nipple, said gun directly carrying a coupling presenting a sleeve retractile toward said gun during the coupling operationalid a longitudinally movable valve openabl'e subsequent to the coupling operation.A

15.V Lubricating apparatus comprising, a lubricant-expelling gun for connection to a lubricant-receiving nipple, said gun carrying a coupling presenting a sleeve retractile toward said gun during the coupling operation by rotation of said gun, a valve openable by rotation of said gun'in coupling direction and detent means deferring valve opening operation until after the coupling operation.

16. A lubricant-expelling gun having a coupling atY the discharge thereof presenting a retractile sleeve, a sealing part and a second sleeve within said retractile sleeve permitting turning of the latter thereon and opposing rotation oi said sealing part with said retractirle sleeve during the coupling and uncoupling opera-tions. v

17-.fA lubricant-expelling gun having a coupling at the discharge thereof presenting a retractilek sleeve, a sealing part and a second sleeve Within sai-d retractile sleeve and longitudinally movabletherewith permitting turning of the latter thereon and yopposing rotation of said sealing part with said retractile sleeve during the 'coupling and uncoupling operations.

18. A lubricant-expelling gun having a coupling at the discharge thereof presenting a retractile sleeve, a sealing part and a second sleeve within said retractile sleeve and longitudinally movable therewith permitting turning of the latter thereon and opposing rotation of said sealing part with said retractile sleeve during the coupling and uncoupling L operations, said second sleeve longitudinally slidable relative to said sealing part.

' 19. A lubricant gun provided adjacent its discharge end with a valved coupling comprisingl an element longitudinally movable by rotation thereof relative to a cooperating non-rotatable part and a valve axially operable by rotation of means rotatable relative to. said element and said part, the means for operating said valve including cooperating pin and inclined slot means operatively interposed between said element and the body of the gun.

20. Lubricating apparatus comprising, a source of lubricant under pressure present ing a coupling having a torque-pressed sealingelement non-rotatable relative to a lubricant-receiving nipple, valve means, and coordinated detent means controlling operation of said valve means and said coupling whili` f permitting operation of said torque-pressed sealing element at all times when under torque in sealing direction.

21. In a nozzle for lubricators, the combination of a body, a member slidably mounted in the body, means for moving the body to cause a parttobe lubricated to be engaged by said member for making a sealed joint be-v tween said part and said member, a valve seated 4in the body, means for forcing the member forward-ly and holding the valve against its seat, and means whereby said body is permitted to move while said member is in sealedengagement with said part before said valve will be'moved from its seat, substantially as described.

In testimony whereof,I have signed my name `to this specification.

HOWARD J. MURPHY.

CERTIFICATE OF CORRECTION.

Patent No. ,847,357. Granted March 1, 1932, to

HOWARD J. MURPHY.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, lines 88 to 90, claim 6, strike out the words "to a cooperating non-rotatable part and a valve axially operable by rotation of means rotatable relative"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 26th day of April, A. D. 1932,

M. J. Moore, (Seal) Acting Commissioner of Patents. 

